<template>
  <div class="address">
    <div class="text">
      <div class="none" v-if="!showAddress">您需要先添加收货地址才可提交订单。</div>
      <ul v-if="showAddress">
        <li><span>收<i/>货<i/>人：</span>{{ showAddress.receiver }}</li>
        <li><span>联系方式：</span>{{ showAddress.contact.replace(/^(\d{3})\d(\d{4})/, '$1****$2') }}</li>
        <li><span>收货地址：</span>{{ showAddress.fullLocation }}</li>
      </ul>
      <a @click="openAddressEdit(showAddress)" href="javascript:;" v-if="showAddress">修改地址</a>
    </div>
    <div class="action">
      <XtxButton @click="openDialog" class="btn">切换地址</XtxButton>
      <XtxButton class="btn" @click="openAddressEdit({})">添加地址</XtxButton>
    </div>
  </div>
  <XtxDialog title="切换收货地址" v-model:visible="visibleDialog">
    <div class="text item" :class="{active:selectedAddress && selectedAddress.id === item.id}" v-for="item in list"
         :key="item.id"
         @click="selectedAddress = item">
      <ul>
        <li><span>收<i/>货<i/>人：</span>{{ item.receiver }}</li>
        <li><span>联系方式：</span>{{ item.contact.replace(/^(\d{3})\d(\d{4})/, '$1****$2') }}</li>
        <li><span>收货地址：</span>{{ item.fullLocation.replace(/ /g, '') + item.address }}</li>
      </ul>
    </div>
    <template v-slot:footer>
      <XtxButton @click="visibleDialog = false" type="gray" style="margin-right:20px">取消</XtxButton>
      <XtxButton @click="confirmAddressFn" type="primary">确认</XtxButton>
    </template>
  </XtxDialog>
  <!--  收货地址添加编辑组件 -->
  <AddressEdit @on-success="successHandler" ref="addressEditCom"/>
</template>

<script>
import { ref } from 'vue'
import AddressEdit from './address-edit'

export default {
  name: 'checkout-address',
  components: {
    AddressEdit
  },
  props: {
    // 收货地址列表
    list: {
      type: Array,
      default: () => []
    }
  },
  // 1.在拥有根元素的组件中，触发自定义事件，有没有emits选项无所谓
  // 2.如果你的组件渲染的代码片段，vue3.0规范，需要在emits中申明你所触发的自定义事件
  // 3.提倡： 发了自定义事件，需要在emits选项中申明你所触发的自定义事件
  emits: ['change'],
  setup (props, { emit }) {
    //  1.找到默认收货地址
    //  2.没有默认收货地址，使用第一条收货地址
    //  3.如果没有数据，提示添加
    const showAddress = ref(null)
    const defaultAddress = props.list.find(item => item.isDefault === 0)
    if (defaultAddress) {
      showAddress.value = defaultAddress
    } else {
      if (props.list.length) {
        // 加上注释：忽略下面代码检查的eslint
        // eslint-disable-next-line vue/no-setup-props-destructure
        showAddress.value = props.list[0]
      }
    }

    // 通知父组件一个收货地址Id
    emit('change', showAddress.value && showAddress.value.id)

    // 显示隐藏
    const visibleDialog = ref(false)

    // 记录当前选中的地址ID
    const selectedAddress = ref(null)

    const confirmAddressFn = () => {
      //  把显示地址换成选中的地址
      showAddress.value = selectedAddress.value
      //  把选中的地址ID通知结算组件
      emit('change', selectedAddress.value?.id)
      visibleDialog.value = false
    }
    const openDialog = () => {
      //   将之前选中的地址设置为null
      selectedAddress.value = null
      visibleDialog.value = true
    }
    // 打开添加编辑收货地址组件
    const addressEditCom = ref(null)
    const openAddressEdit = (address) => {
      // 添加 {}  修改{数据}
      addressEditCom.value.open(address)
    }
    // 成功处理函数
    const successHandler = (formData) => {
      // 根据formData中的ID去当前地址列表中查找，有就是修改，否则就是添加
      const address = props.list.find(item => item.id === formData.id)
      if (address) {
        for (const key in address) {
          address[key] = formData[key]
        }
      } else {
        //  如果是添加： 往list中追加一条
        // 当你在修改formData的时候，数组中的数据也会更新，应为是同一引用地址
        // 啥时候修改formData,当你打开对话框需要清空之前的输入信息
        // 克隆formData数据
        const jsonStr = JSON.stringify(formData)
        // eslint-disable-next-line vue/no-mutating-props
        props.list.unshift(jsonStr)
      }
    }
    return {
      showAddress,
      visibleDialog,
      selectedAddress,
      confirmAddressFn,
      openDialog,
      openAddressEdit,
      addressEditCom,
      successHandler
    }
  }
}
</script>

<style scoped lang="less">
.xtx-dialog {
  .text {
    flex: 1;
    min-height: 90px;
    display: flex;
    align-items: center;

    &.item {
      border: 1px solid #f5f5f5;
      margin-bottom: 10px;
      cursor: pointer;

      &.active, &:hover {
        border-color: @xtxColor;
        background: lighten(@xtxColor, 50%);
      }

      > ul {
        padding: 10px;
        font-size: 14px;
        line-height: 30px;
      }
    }
  }
}

.address {
  border: 1px solid #f5f5f5;
  display: flex;
  align-items: center;

  .text {
    flex: 1;
    min-height: 90px;
    display: flex;
    align-items: center;

    .none {
      line-height: 90px;
      color: #999;
      text-align: center;
      width: 100%;
    }

    > ul {
      flex: 1;
      padding: 20px;

      li {
        line-height: 30px;

        span {
          color: #999;
          margin-right: 5px;

          > i {
            width: 0.5em;
            display: inline-block;
          }
        }
      }
    }

    > a {
      color: @xtxColor;
      width: 160px;
      text-align: center;
      height: 90px;
      line-height: 90px;
      border-right: 1px solid #f5f5f5;
    }
  }

  .action {
    width: 420px;
    text-align: center;

    .btn {
      width: 140px;
      height: 46px;
      line-height: 44px;
      font-size: 14px;

      &:first-child {
        margin-right: 10px;
      }
    }
  }
}
</style>
